Senior Staff Linux Security Engineer

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Senior Staff Linux Security Engineer in USA

Crusoe
Full time
Email

USA
10/07/2026
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Sunnyvale, CA

Responsibilities

Implement Linux kernel security enhancements, configuration hardening, access controls, secure boot protections, and CI guardrails.
Triage CVEs, assess exploitability, research kernel and OS vulnerabilities, and backport non-trivial upstream fixes.
Audit and harden Cloud Hypervisor device models and vhost-user datapaths while advancing confidential computing primitives.
Develop and use fuzzing, static analysis, dynamic analysis, and kernel security auditing tools.
Establish secure coding practices, conduct security-focused C code reviews, and support kernel- and OS-level incident response.
Balance security improvements with performance requirements for high-performance AI infrastructure.
Provide technical mentorship and collaborate with hardware, hypervisor, OS, cloud infrastructure, and security operations teams.

Requirements

Bachelor’s degree in Computer Science, Computer Engineering, or a related field.
At least 5 years of relevant industry experience, including at least 3 years focused on low-level operating systems or kernel security.
Deep knowledge of Linux kernel internals and kernel vulnerabilities, exploitation techniques, and security mitigations.
Experience with secure coding principles and security-focused code reviews, particularly in C.
Proficiency with kernel debugging and security analysis tools including GDB, crash, kgdb, valgrind, address sanitizers, and fuzzers.
Familiarity with hardware-assisted security features such as Intel SGX, AMD SEV, and ARM TrustZone.
Experience with CVE remediation and automation, with the ability to pass a background check.
Preferred qualifications include open-source kernel security contributions, hypervisor security, HSMs or TPMs, and kernel-level offensive security or penetration testing.

Benefits

Competitive compensation, equity packages, and Restricted Stock Units.
Paid time off, paid holidays, leave programs, paid parental leave, and volunteer time off.
Comprehensive health, dental, and vision insurance, employer HSA contributions, paid life insurance, and short- and long-term disability coverage.
Professional development, tuition reimbursement, mental health and wellness support, commuter benefits, and a cell phone stipend.
401(k) retirement plan with company match up to 4% of salary, global travel insurance, emergency assistance, daily meals allowance, and location-specific perks.

Salary: $250k - $300k/yr

Crusoe

As the AI factory company, Crusoe is on a mission to accelerate the abundance of energy and intelligence. The company provides a reliable, scalable, cost-effective, and energy-first solution for AI infrastructure. By harnessing large-scale energy resources, building AI-optimized data centers, and...

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